Preflop, raise more or limp along. You might get one player to fold to $12, but even 4 ways with unsuited broadway is not ideal. Minimum $15, ideally $20.
As played, betting the flop seems bad so the check is fine but we need to understand that by checking, it's unlikely we'll be able to win this pot without hitting a pair. With 4 other players any scare card you hit is likely to actually hit someone else.
Turn bet seems bad. What are you repping? A big club draw? 4s full?
The river is not a great card to bluff given that a large portion of V's range is Ace high spade draws and club draws. You're also repping a very small range of value hands here. Aces full and maybe two flushes? This is likely not something a typical player will realize, however. I agree that $55-$60 will accomplish the same as $75. 7s are not folding, nor is a straight. Most villains will call with an Ace here too IMO.
This hand is so much easier to play with only 2-3 going to the flop.